8

Pelt Map Parameters Dialog 893
Note:
While Straighten Stretcher is active, you can
pan and zoom the editor window at any time using
contextual controls (middle-button drag or turn
mouse wheel, respectively) to access a different
part of the window. After doing so, the software
still remembers the last vertex you dragged and
draws a str aight line between it and the next one
you drag. Similarly , you can adjust the window
using the
control buttons and then return to
straightening the st retcher. If the control requires
more than a single click, such as Pan, exit the
control by right-clicking in the window and then
return to st raightening t he stretcher.
Tip: To create a sym metrical outline for the
stretcher,createtheoutlineononesideandthen
use Mirror Stretcher (following).
Mirror Stretcher—Mirrors the stretcher points
fromonesideofthemirroraxis(seefollowing)to
the other. By default, Mirror Stretcher mirrors the
points from t he right side to the left.
Mirror Axis—Lets you specify the orientation of
themirroraxis.Theaxistakestheformofthree
yellow lines forming a T. The leg of the T indicates
thesidethatwillbemirroredwhenyouuse
Mirror Stretcher (see preceding), and the crossbar
indicates the axis across which the mirroring will
occur. Default=0.0. Range=0.0 to 360.0.
Select group
These commands let you select all the st retcher
points or the pelt UVs. As with other selection
methods, you can press and hold CTRL when you
use either of these to add to the current selection.
That is, to select all stretcher points and pelt UVs,
clickonebutton,pressandholdCTRL,andthen
click the other button.
Select Stretcher—Selects all stretcher points.
Select Pelt UV s—Selects all pelt UVs.
Springs group
Theseparameterscontrolthespringsthatareused
to stretch the pelt. In most cases you won’t need
to change these values, except possibly for Pull
Strength.
Pull Str ength—The m agnitude of the stretching
action when you click Simulate Pelt Pulling.
Default=0.1. Range=0.0 to 0.5.
Ifthestretchingistoogradual,increasePull
Strength for a more forceful stretching action.
Stiffness—Sets the rate at which the springs pu l l.
The higher the Stiffness value, the more abrupt the
pulling action. Default=0.16. Range=0.0 to 0.5.
Dampeni ng—Appliesadampeningorinhibiting
factor to the pulling action. The higher the
Dampening value, the greater the inhibition of t he
stretcher. Default=0.16. Range=0.0 to 0.5.
Decay—Therateoffalloffoftheinfluenceof
each pelt-seam vertex on the other mapping
ver t ices. Higher Decay values typically result in
significantly g reater stretching, or undesirable
results. For best results, keep the Decay value low.
Default=0.25. Range=0.0 to 0.5.
Lock Open Ed ges—Locks the open edges in place.
This typically applies to using the stretcher on a
partial selection of mapping vertices in the pelt
region.WhenLockOpenEdgesison,selected
vertices next to unselected vertices tend to stay in
place during stretching. When Lock Open Edges
is off, the selected vertices tend to pull away from
the unselected vertices.
Simulation group
These are the main controls for the simulation, in
which the springs attached to the stretcher pull the
pelt seam ver tices out, flattening the UV s. For best
results, alternate between running the simulation
(click Simulate Pelt Pulling) and relaxing the mesh.